Malicious PDF — malware analysis report

Static analysis result for SHA-256 70012ea79dd9357e…

MALICIOUS

PDF

49.0 KB Created: 2020-07-21 00:58:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1f5f969c1e235d64d0a1a0883b941416 SHA-1: fd6ced933f540fcf9599cd154dde5951d06edfb2 SHA-256: 70012ea79dd9357e134e17890b1d27aeccb81ed68167dc98267afdf38881c727
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, with a critical heuristic firing indicating it points to known malicious redirector infrastructure. The document body, though heavily obfuscated, suggests a lure related to 'Creativity vs innovation pdf'. The presence of a link farm further supports the malicious intent, likely to drive traffic to malicious sites or engage in SEO poisoning.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/wb?keyword=creativity%20vs%20innovation%20pdf
    • http://files.resourceology360.com/uploads/1/3/1/8/131858661/665f51d.pdf
    • http://files.valourmartialarts.com/uploads/1/3/2/6/132696351/kopolebefupix-suwadenugowaxuz-bofaneriniwog-lomokosatag.pdf
    • http://files.vcgallery.org/uploads/1/3/1/8/131856381/rokererukirejakifu.pdf
    • http://files.fresnonutritionsolutions.com/uploads/1/3/2/6/132683111/9806049.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0427/8861/8396/files/befuzagewudevupotiwu.pdf
    • https://cdn.shopify.com/s/files/1/0433/8096/5534/files/zimasexalawuwozebopojop.pdf
    • https://cdn.shopify.com/s/files/1/0428/3600/0931/files/fewenapetezenewipuboj.pdf
    • https://wowusesoliz.files.wordpress.com/2020/07/26385033101.pdf
    • https://xarezenejo.files.wordpress.com/2020/07/3429135419.pdf
    • https://menavediz.files.wordpress.com/2020/06/92494505892.pdf
    • https://ziziverip.files.wordpress.com/2020/07/mubeduzupanumurujitawafeg.pdf
    • https://virifala.files.wordpress.com/2020/07/77747885054.pdf
    • https://cdn.shopify.com/s/files/1/0428/9455/7347/files/maxokupaperabut.pdf
    • https://cdn.shopify.com/s/files/1/0432/6768/6556/files/rorexekotegobaz.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/11783771814.pdf
    • https://cdn.shopify.com/s/files/1/0429/5298/2684/files/91461101451.pdf
    • https://cdn.shopify.com/s/files/1/0432/0513/2445/files/34803928158.pdf
    • https://cdn.shopify.com/s/files/1/0431/5460/4198/files/35728433766.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/69298849274.pdf
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/32108886007.pdf
    • https://cdn.shopify.com/s/files/1/0429/8683/2035/files/54712609379.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000081b5.bin
6468e9ed6d02b36a547c7e912f7103ff9945063906717289a83280c163bdf197		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81B5 4976 bytes
font_01_sfnt_off000092bd.bin
8eec8e824367a7494f330bd3d1777f180f259180ca679a9c12335fa3ebe668cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92BD 10516 bytes

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